miller et a



Sept. 15, 1931. D. M. MILLER ET AL 1,823,279

METHOD APPARATUS FOR TESTING AND TRUING EM GENCY VALVES OF TRIPLE VALVES Filed May 1, 1928 ,jwuemtoo Dewey /7 M74 0. 7770/7743 f 2 7 1 Z J. 0% w z 5 ii W futon mu Patented Sept. 15, 1931 UNITED STAT AT NT ()FFICE DEWEY M. MILLERAND GEORGE D. THOMAS, or TRALEE, WEST VIRGINIA; SAID THOMAS AssIGNon T SAID MILLER I METHOD AND APPARATUS FOR TRIPLE Application filed May 1,

ing malleable emergency valves of triple valves,employed in railway rolling stock air brake systems, and has for its primary object to provide means and a method whereby it can be determined whether a malleable steam valve is true with all its component parts, true and properly corelated, and to expediously effect such truing and corelatlon of parts, it it is found not to exist. 7

Another important object of the inventlon is to provide means and a method for dressing up the seating gaskets of such valves by employing a trued part of the latter as guide means for the dressing up operation. 7

Other objects and advantages of the invention will become apparent during the course of the following description:

In the drawings forming a part of the description, and wherein like numerals are employed to designate like parts through the several views: I

Figure 1 is a side elevation of the truing device. V Y 1 .Figure2 is a vertical longitudinal section of the same, illustrating an emergency'valv being trued therein. I A

Figure 3 is a top plan of the lower'die of the truing device.

Figure 4: is a bottom plan of the upper die of the truing device.

Figure 5 is a vertical longitudinal section of a testing and dressing up device, illustrating an emergency valve associated therewith.

- Figure 6 is a top plan of said testing device.

Figure 7 is a vertical longitudinal section taken through the upper portion of a modilied form of testing device, and

Figure 8 is a top plan of the same.

By Way of introduction, and in orderthat the various functions of the apparatus may .1 be more clearly understood and appreciated,

it may be stated that the present invention is designed torestore and true up emergency valves of triple valves to bring them back 'to their standard and operative condition.

Such emergency valves are employed in TESTING AN'D TRU'ING EMERGENCY VALVES VALVES 1928. Serial at. 274,273.

triple valves of railway rolling stock air brake systems, and form a very vital part of such triple valves inasmuch as they control the emergency application of brakes on railway rolling Stock, and therefore must be maintained in the prime of condition in order to prevent leakage of air pressure from the main reservoir to the brake side of the system, so as to prevent a premature application of the brakes or a condition caus ing the car wheels to drag and become flattened. The repair of flattened rolling stock wheels is an expensive proposition and it has been definitelydetermined from actual experience that this expenditure can be saved in a large measure by maintenance of these emergency valves in standard and true condition so as to eliminate any possibility of a premature application of the brakes caused by an improper seating of the emergency 1 valve. These emergency valves are constructedof malleable metal, such as brass, and as shown in the drawings, comprise a valve body in the form of a disk 10 formed integral be t-5 tween the-ends of a valve stem, the normal upper end 11 of which is elongated and slightly tapered as at 12 at its extremity for reception in the socket of a piston valve of a triple valve, and constitutes what may so be termed an upper stem on the valve, while the other end 13 ofthe valve stem, which projects from the opposite side of the disk 10 coaxial with the stem 11, forms a lower stem, the end 14 of which is reduced to provide a shoulder 15 for the abutment of an emergency valve spring, which is slidably received in the socket of an auxiliaryvalve of the triple valve in a manner well understood. The valve disk 10 is provided with an annular flange projecting beyond the disk and concentric with the valve stem to'form a seat for a ring-shaped rubber gasket 17, which is removably retained therein by means of a washer l8, and a nut 19 threaded upon the threaded portion of the stem' 11, as clearly shown in Figure 5.

These emergency valves being constructed of malleable material, such as brass, frequently become damaged, due to handling and transportation prior to their assembly i in triple valves, and also after they are assembled and go into actual operation in triple valves installed in rolling stock, due to the impacts this valve receives from abutment with the piston valve whenever an emergency application of the brakes is made. This damage to the valve usually consists ofthe stems 11 becoming bent, sometimes the valve body disk 10 becoming bent out of its true perpendicular relation to the valve stem, and frequently the rubber gaskets 17 become worn, or foreign matter in the air line lodges thereon, any one of such conditions of the valve causing it to seat in a most simple'and effective manner.

After a defective emergency valve 10 has been removed from the triple valve or before a new valve from stock is used in areplacement, the rubber gasket 17 is removed from the emergency valve by moving the nut and washer 19 and 18 so that the valve is in the condition shown in Figure 2 of the drawings. This valve is then placed in a cylindrical die member 20 :equipped at one, end with'fiattened wrench or vise faces 21, whereby the die member may be supported n a wrench,:v1se, upon a bench or in any other suitable manner, so

1 as to preferably retain it in the upright position shown in the drawings. This die member is formed of any kind of hard metal such as case hardened steel, and is equipped with a central longitudinal bore 22 which is accurately machined to receive only true and unbentvalve stems. The upper portion of this bore is'enlarged as at 23 to receive the threaded and enlarged portion of the valve stem, as shown in Figure 2, with the under face of the valve body disk 10 resting upon a truing surface perpendicular with the bore 22, and assuming the form, in

the present instance, of an annular anvil '24concen-tric with the bore 22; Spaced from and concentric with this annular anvil 24 j. surface of the anvil 24 is spaced such disis an annular skirt or sleeve 25 integralwith' the die 20 so as to provide an annular depression or groove 26 surrounding the anvil or truing surface 24 thereby forming a pocket for the reception of the annular flange of the valve disk 10. The upper or truing tance above the bottom of the groove 26as to prevent contact of the lower edge of the depending flange of the valve disk therewith during the truing operation.

The skirt or sleeve portion 25 of the die is of the same diameter as the main body of the die, but has its interior wall slightly flared upwardly to receive and guide a tapered extension 27 of a second or upper die member 28 having substantially the same diameter as the complementarydie member 20. This tapered extension 27 is of a length and taper enablinguthe extremity of the extension, which we term a hammer" portion, to engage the body disk 10 of the valve, and pressit downupon the anvil 24 to its proper position and corelation with the valve stem without binding in the skirt portion, and

vWithout a shoulder 29 formed at the juncture of said extension 27 and the body 28 coming in contact with the upper edge of the skirt of sleeve portion '25 of the comple-c mentary die. This clearance is allowed so that the upper die may properly force the valve stem. 11 down into the bore 22, to straightenthe same in case it is bent, and

the valve disk 10 down upon the anvil to insure proper corelation between this disk and the valve stem without any binding taking place between the two die members to prevent their proper cooperation.

The outer end surface of the extension- 27 of the die member 28 is machined perfectly at right angles to its longitudinal dimension, and a bore 30 extends axially throughout the length of this die member,

and is machined to accurately fit true standard valve stems 13. This bore 30 is enlarged at its lower end, as at 31,- and is carefully machined to accurately fit a true and standardstem portion 13 of the valve, while the smaller portion 80 of thebore is machined to accurately fit, true and receive the reducedv extensions 14 of such valve stems. The upper end of 'the bor e 30 is enlarged as at 32 to removably receive a reduced extension 38 of an anvil knob or striking member 34, and not only servesto center an impact upon the upper die member 28 but its being removable, serves also to release any vacuum created in the bore 30 to facilitate separation of the die members and removal of the valve therefrom; Of course, this upper die member 28, as well as the anvil member 84, are formed of any suitable hard material, such as case hardened steel, which will withstand the impacts for. truing the valves.

After the rubber gasket 17 has been removed from the valve, as stated before, the lower valve stem 11 is introduced through the truing surface or anvil 24 and led into the bore 22.- If the stem 11 is perfectly true and unbent, it may be pushed all the way down into the bore untilthe valve body or disk 10 engages the truingsurface or anvil 24, In the event of the valve stem 11 being bent and out of true with respect to the body of the valve," it willbe introduced down into the bore 22 as far as itrwill fall by gravity. In case either the valvestem is bent, or, the

valve disk 10is not in proper right angular relation thereto, or one side of it is deflected from its true standard plane, the valve will not seat properly in the die member 20, and

this will be, of course,ian indication of afaulty valve.

The upper die member 28'is then positioned, so that its enlarged'bore 31 will receive'the enlarged portion 13 of the upper valve stem and is lowered upon the same so that the extension 271is guided down into the socket of the skirt or sleeve 25 until the truing surface of the hammer extension 27 engages the upper surface of the valve disk 10, and the reduced extension 14 of the valve stem enters the bore 30.; The removable striking cap or anvil 3 1 is then placed with its reduced extension 33 in the enlarged upper, end 32 of the bore 30, after which the die member 28 is forced down into the lower die member 20 under pressure, and, preferably, under the impact of a blow, which forcibly moves the upper die member against the valve disk 10 and drives it down upon the anvil 24:, and the stem 11 down into the straightening bore 22. After the malleable valve has' been driven down so that its valve disk 10 rests, upon the anvil 24:, it is known that both of the stems 11 and 13 of the valve are straightened, and that the valve disk 10 has again been restored to its proper correlation withthe two valve stems,

so thatthe disk stands exactly perpendicular to both of these stems, due to the fact that the two die members are exactly centered, and the surfaces of which are carefully machined to accurately fit the contact ing parts of a standard true valve.

After this truing operation has been performed, there is a possibility that the rubber gasket 17 does not possess a true seating surface, or that'it' may become bulged when it is reseated in the flange 16 of the valve and the nut 19 and washer 18 have been placed upon the valve'stem 11, so that we have provided means for giving the valve a :final test as to its accuracy,as well as to dress the rubber gasket up so. that its seat- 7 ing surface is absolutely perpendicular to the stem 11. This testing device is in the form of what may be termed a gauge 35 consisting of a cylindrical piece of relatively hard; and tough. material, such as case hardened steel. This gauge is equipped with a central axially extending bore 36. which is accurately machined to admit only absolutely true valve stems, and its lower portion is threaded, as at 37, whereby itmay be mounted upon a rotating instrume'ntality,

such asa shaft, for; a purpose which will presently appear, 1

A laterally extending orifice 38 extends from the exterior surface of the guage into the bore 36 to provide a threads 37 is enlarged, as at 39, to freely receive the nut and washer of the valve that is placed in the gauge so that the seating surface of the rubber gasket may freely rest upon the truing surface 10, which is carefully machined so as to be disposed at exactly right angles to the axis of the bore 36. In the modification shown in Figures 5 and 6, a disk of emery cloth 11 is adhesively secured to the truing surface 10 and is equipped with a central opening 42 of the same size as the enlarged circular portion 39 of the bore, so as to admit the washer 18 and to permit the seating surface of the washer 17 to engage the emery cloth. The gauge 35 is preferably rotated by any suitable means, while the upper stem 13 of the valve is heldstationary by the fingers so that the emery cloth 11 will abraid the seat- The end of the bore 36 opposite the.

be inspected to determine whether there are i any high points which have not been sufi ciently dressed off, or in case of flagrant irregularities, may be determined by leaving the valve in the gauge and determining whether there is any space between the seating surface of the gasket 17, and the abrasive element d1. In case it is found necessary to further dress off any high points on the gasket, the gauge is rotated until the seating surface of the gasket is given a surface -Wl110l1 is uniformly at right angles to the valve stem, which time it is known that the valve and its gasket have been restored to their true and standard condition, so that the valve may be then assembled in a triple valve without any danger of its failure to function as it should.

In Figures 7 and 8, a modified form of abrasive surface is provided for the gauge.

35, which consists of seating a ring of carborundum, or any other suitable abrasive material 42, in an annular recess 43 of the truing surface 40, concentric with the bore 35 and its enlarged portion. and dressing up of the gasket is carried out in the same manner as with Figure 5.

Although we have illustrated specific examples of our truing and testing device,

used in conjunction with triple valves, it is The testing for a particular kind of emergency valve to be understood that our invention is not limited to this particular type of valves, as

many other types can be trued and tested with slight modifications thereto.

It will also be understood that various changes in the size, arrangement and shape with the same method and apparatus, or

out departing from the spirit of the invent 7 tion, or the scope of the appended claims.

We claim .1. The method of testing and truing clouhle stem valves comprising a pair of stems extending from opposite sides of a valve disk, consisting in passing one of the stems through a truing surface and into a truing bore of a size to receive only true stems, in serting the other valve stem through the second truing surface and into a truing bore of a size to receive only true .stems and then moving one truing surface toward the other to engage said valve disk to straighten both of'said stems.

2. The method of testing and truing douhle stem valves comprising a pair of stems extending from opposite sides'of a valve disk, consisting in passing-one of the stems through a truing surface and into atruing bore of a size to receive only true stems, inserting the other valve stem through the second'truingsiuface and into a truing bore of a size to receive only true stems and then moving one truing surface toward the other toengage said valve disk to straighten both of said stems, and to'exert pressure upon said valve disk to restore correct relationship between said disk and both of said stems.

3. The method of testing and repairing emergency triple valves having rubber gasket seats, consisting in first removing said gasket from the valve body, forcing said valve stem through a truing surface and into a truing bore of a size to receive only true stems, replacing said gasket and then rotating said valve in a truing abrasive instrumentality to determine the relatlon'of the gasket with respect to corrected valve.

1. The method of truing and testing emergency triple valves having rubber gasket seats, consisting in first removing said gasket from the valve body, passing the valve stem through atruing'surface and into a truing looreof a size to snugly receive only true stems, exerting a pressure upon said valve body in a direction parallel to said truing'opening, replacing sa d gasket, and then rotating said valve in a truing abrasive inst-rumentality to determine the relation of the gasket with respect to said corrected valve. 1 r

,5. A testing and truing device for double stem disk valves comprising a pair of relatively movable dies, each having a truing surface for engagement with opposite sides of the valve disk, each die bemg provlded with a truing bore for the receptio'nof one stem of the double stem valve, said dies'heing adapted to be pressed together to cans said truing surfaces to move together to straighten said stems and to dispose said disk in proper relationship tosaid stems.

'6. A testing'an d truing device fordouble' stem disk valves comprising 'a pair of relatively" movable dies, each having a truing surface for engagement with opposite sides of the valve disk, each diebeing provided with a truing bore for thereception of one stem of the double stem valve, said dies being adapted to be pressed together to cause said truingsurfaces to move together to straighten said stems and to dispose said disk in proper relationship to said stems,

and means for guiding and maintaining said dies in axial alignment with each other durin relative movement;

7. A testing and truing device for double stem disk valves comprising a pair of relatively movable dies, each having a truing surface for engagement with opposite sides :of the valve disk, each die being provided with a truing bore for the reception of one stem of the double'stem valve, said dies being adapted to be pressed together to relative movement.

8. A truing device for double stem valves comprising a pair of relativelymovable dies, one of said dies having an annular raised anvil and a truing bore concentric therewith'to' receive one of said valve stems, said bore adjacent said anvil being enlarged, a second die having a circular hammer surface and a truing bore concentric therewith to receive the other valve stem, said dies adapted to be arranged with their bores aligned and to move together to cause said hammer surface to'drive the disk of said valve upon said anvil. I

9. A truing devicefor double stem valves comprising apair of relatively movable dies,

one of said diesh'aving an annular raised anvil and atruingbore concentric therewith to receive one of said valve stems, said bore adjacent said anvil being enlarged, a second die'having a circular hammersurface and a truing bore concentric therewith to receive the other valve stem, said dies adapted to be arranged with their bores aligned and to move together to cause said hammer surface to drive the disk of said valve upon said anvil, and a striking anvil removably associated with said bore of said second die;

10-. A- truing device for double stem valves comprising a pair of relatively movable dies, one of said dies having an annular raised anvil and a truing bore concentric therewith to receive oneof said valve stems, said bore adjacent said anvil being enlarged, a guide skirtextended from said die con- Ill centric with said anvil, a second die having, a circular hammer surface and a truing bore concentric therewith to receive the other valve stem, said second die having an elongated guide extension for a sliding fit with said skirt to maintain alignment of said bores, and cause said hammer surface to move parallel to said anvil, said dies adapted to be arranged with their bores aligned and move together to cause said hammer surface to drive the disk of said valve upon said anvil.

11. A truing device for stem valves comprising an anvil upon which the body of the valve is positioned, and a die having a truing surface anda bore to receive the valve stem and adapted to be moved upon said valve stem toward said anvil to cause its truing surface to force said valve body to fit perfectly upon said anvil.

12. A truing device for stem valves comprising an anvil upon which the body of the valve is positioned, a die having a truing surface and a machined bore to receive only true valve stems, and an anvil removably associatedwith said bore and adapted to center a blow upon said die to force it upon said valve stem toward said first named anvil to cause its truing surface to force said valve body to fit perfectly upon said anvil.

13. The method of truing stem valves consisting in passing the valve stem through a truing body and into a truing bore of a size to receive only true stems, and then exerting pressure upon said valve body with means guided by said truing body.

14. The method of truing distorted stem valves consisting of passing the valve stem through a truing surface and into a truing bore of a size to receive only true stems, exerting pressure upon the body of the valve ina guided direction co-axial with said truing bore, and forcing the valve body toward said truing surface by said co-axial pressure while the stem is being forced into said bore until the valve body is forced against said truing surface to correct any inaccuracy of relation between the stem and body of the valve.

' 15. The method of truing distorted stem valves consisting of passing the valve stem through a truing surface and into a truing bore of a size to receive only true stems, and then moving a member in a guided path coaxial with the truing bore to subject the body of the valve to pressure directed axially of said bore to force a bent stem into said bore to straighten the same while forcing the valve body toward and against said truing surface until the valve body is disposed substantially co-planar to the truing surface to correct any inaccuracy of relation between the stem and body of the valve.

16. A truing device for distorted disc stem the die and having a truing surface adapted to engage the disc of the valve, said memher having guide means cooperating with r the die upon impact delivered to the member to force the disc against the truing surface and the bent stem into the bore.

17 Atruing device for distorted stem disc valves comprising a die having a truing surface and a truing bore of a size to receive only true stems, a hammer blow receiving member entirely disconnected from the die and having a truing surface adapted to engage the disc of the valve, said member having a blow receiving surface to receive impacts to force the disc against the truing surface and the bent stem into the truing bore.

18. A truing device for distorted stem disc valves comprising a die having a truing surface and a truing bore of a size to receive only true stems, a hammer blow receiving member entirely disconnected from the die and having a truing surface adapted to en gage the disc of the valve, and an anvil carried by said member co-axial with the truing bore to receive a blow to force the disc against the truing surface and the bent stem into the truing bore. 7

19. A truing device for distorted stem valves comprising a pair of relatively movable dies, one of said dies having an annular raised anvil and a truing. bore concentric therewith to receive the valve stem, the other die having a truing surface concentric therewith, and said dies adapted to be arranged with their axes aligned and to move toward each'other to cause said truing sur face to drive the disc of said valve upon the anvil and the stem into said truing bore.

20. A truing device for distorted stem disc valves comprising a pair of relatively movable dies, one of said dies having an annular raised anvil and a truing bore concentric therewith to receive the valve stem, the other die having a truing surface, said dies adapted to be arranged with their axes aligned and to move toward each other to cause said truing surface to drive the disc of said valve upon said anvil, and a striking anvil carried co-axially by said second named die.

21. A truing device for distorted disc stem valves comprising a pair of relatively movable dies, one of said dies having an annular raised anvil and a truing bore concentric therewith to receive the valve stem, a guide skirt extended from said die concentric with said anvil, the other die having a circular truing surface and an elongated guide extension adapted to slidingly fit within said guide skirt to maintain alignment of said dies and to cause said truing .20 I stem valves comprlsing a pair of'relatively surface to move parallelto said anvihsaid dies adapted to be arranged with their axes aligned and to move toward each other to cause said truing surface to drive the disc of the valve upon said anvil and the stem into said truing bore.

22. A truing device for distorted stem discvalvescomprising a pair of relatively .movable dies, one of said dies having an annular raised anvil and a truing bore concent ic therewith to receive the valve stem said bore adjacent said anvil being enlarged, the other die having a truing surface adapted to abut the disc of the valve, and said dies adapted to be arranged with their axes aligned and adapted tobe moved toward one another to cause said truing surface to drivethe disc of said valveupon said anvil and the valve stem into said truing bore.

23. A truing device for distorted disc movable dies, one of said dies having a circular anvil and a truing bore concentric therewith to receive the valve stem, an upwardly tapering guideskirt extended from said die concentric with said anvil, the other die having a truing surface and an elongated tapered guide extension for sliding fit Within said skirt to maintain alignment of sald dies and tocause the truing surface to move parallel to said anvil, said dies adapted to be arranged with their axes aligned and to move toward each other to cause said truing surface to drive the disc of the valve downupon said anvil and the valve stem down into said truingbore.

In testimony whereof we have hereunto set our hands. I 7

DEWEY M. MILLER. GEORGE D. THOMAS. 

